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webauthn.io

https://webauthn.io· First analyzed 21 May 2026· Updated 21 May 2026
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webauthn.io
Desktop screenshot of webauthn.io
Mobile screenshot of webauthn.io
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

52.41.96.105

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Portland, United States

ASN

AS16509

Organization

AWS EC2 (us-west-2)

Server

Caddy

Nameservers

ns-18.awsdns-02.com.ns-642.awsdns-16.net.ns-1063.awsdns-04.org.ns-1644.awsdns-13.co.uk.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
753 ms10%
Speed Index
979 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
458 KB
15 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Amazon Web Services (AWS)

Technology Stack

4 Technologies Detected

CSS Frameworks

2
Tailwind CSS
Bootstrap

Frameworks

1
Alpine.js

Web Servers

1
Caddy

SEO Analysis

D51/100
15
8
2
Meta Tags5/15
Content11/12
Headings3/8
Technical11/21
E-E-A-T0/7
Images2/7
Links2/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
W
webauthn.iowebauthn.io

WebAuthn.io

Demonstration of the WebAuthn specification.

Title Length11 chars

Recommended: 50-60 chars (~66px / 580px)

Description Length44 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (58/60) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Local SEO

Local Search Readiness

3/100
Poor
1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F39/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
9/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
header/footer
Text ratio:8%
Words:719
Token eff.:Optimal
Sections/1K:7
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary16w
Descriptive Headingsavg 3.6w
Canonical URL
Open Graph2/3
Twitter Card2/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
D
55/100
9
Passed
4
Critical
3
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
7/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
71/100
A
46 mg
CO₂e / view
457.9 KB
Page Weight
90%
Cleaner Than
New Visitor
53 mg
vs
Returning (cached)
26 mg
Annual (10K/mo)
5.5 kg
Emission Segments
Data Center
2 mg
Network
14 mg
Device
30 mg
Resource Breakdown
JavaScript
46.3 KB
Images
132.0 KB
CSS
225.3 KB
HTML
53.8 KB
Other
514 B
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
3 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

49%Poor
Interactive

HTTPS

No WAF

43d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

05.04.2026

Valid Until

04.07.2026

Subject Alternative Names (1)

webauthn.io

SHA-256 Fingerprint

C7:3D:13:DE:88:C9:58:E7:E2:A0:05:7C:1C:2D:36:C3:DA:72:57:E7...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=2592000
cache-control
🔴 No Cache(max-age=0, no-cache, no-store, must-revalidate, private)
content-length
54821
content-type
text/html; charset=utf-8
cross-origin-opener-policy
same-origin
date
Thu, 21 May 2026 20:21:49 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

0

SPF
DKIM
DMARC

Domain Information

webauthn.io

Domain Age
8y 7m

Created

06.10.2017

Expires

06.10.2026

Last Updated

30.07.2025

Registrar

MarkMonitor Inc.

DNSSEC
Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
C
61/100
Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
Viewport
width=device-width, initial-scale=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Quicksand + Roboto Slab

WCAG AAA
67/100
Readability
/30
20/30

16px · LH 1.50

Hierarchy
/20
8/20
WCAG
/25
24/25

11.57:1 min contrast

Performance
/25
15/25

2 fonts · 3 req

Heading Font

Quicksand

Sans

Body Font

Roboto Slab

Sans16px

Contrast Ratio

11.57:1

WCAG AAA (≥7:1)

Reading Comfort

~38 CPL

Narrow lines
72px
h2
48px
h3
24px
h4
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 20/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 11.6:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFontsFlesch 20

Color Palette

8 unique colors
Light
#ffffff
Background· 25.099999999999998%
#cdebcc
Primary· 20.700000000000003%
#93c3de
Accent· 18.9%
#9ed1cb
Secondary· 17.2%
#515e86
Secondary· 6.9%
#b2debb
Secondary· 5.3%
#8394ab
Secondary· 3.7%
#7dbfbc
Secondary· 2.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

Sponsored

Scripts & Styles

4 Resources

2
Scripts
2
Styles
0
Async
1
Defer

Top Script Sources

local(2)

Website Identity

webauthn.io

8 years old
Location detected: 🇺🇸 United Statesvia ip
MarkMonitor Inc.en

Social Profiles

GitHub

Sponsored

Last analyzed: 21 May 2026 at 20:22

Historical Analysis & Change Tracking